LTC1297CCN8#PBF

ADCs/DACs - Special Purpose Overview

The LTC1297CCN8#PBF is a single-chip 12-bit data acquisition system manufactured by Analog Devices Inc. It integrates a switched-capacitor successive approximation A/D converter, a differential input sample-and-hold on the positive terminal, and serial I/O within an 8-lead plastic DIP package. The device operates on a single 5V supply with a maximum throughput rate of 60kHz. Key electrical specifications include a typical supply current of 6.0mA during operation and a reduced shutdown current of 5mA when CS is high. It features a direct three-wire interface compatible with most microprocessor serial ports.

ADCs/DACs - Special Purpose Feature Summary

• 12-bit resolution with a maximum conversion time of 12ms over temperature.
• Built-in sample-and-hold circuitry on the positive analog input.
• Automatic power shutdown mode reduces supply current to 5mA when idle.
• Single 5V supply operation with analog inputs common-mode to supply rails.

ADCs/DACs - Special Purpose Applications

• Remote digitizing applications requiring minimal interconnects.
• Microprocessor-based data acquisition systems.
• DSP applications utilizing the 60kHz throughput capability.

ADCs/DACs - Special Purpose Procurement Notes

Verify the component matches the specific N8 package designation for the 8-lead plastic DIP variant. Confirm that the operating temperature range requirements align with the C-grade specification (0°C to 70°C). Ensure the design accounts for the 5.5ms wakeup time required for the power shutdown mode before initiating data transfer.

ADCs/DACs - Special Purpose Selection Notes

Select this model over the LTC1292 if automatic power shutdown functionality is required to minimize standby current consumption. Verify that the microprocessor interface supports the synchronous half-duplex serial protocol or can emulate it via parallel GPIO lines. Ensure the reference voltage source is stable, as linearity and gain errors are referenced against VREF.

ADCs/DACs - Special Purpose Part Context

This part belongs to the LTC1292/LTC1297 family of single-chip 12-bit data acquisition systems. The LTC1297 variant is distinguished from the LTC1292 by its inclusion of a power-down feature activated by the Chip Select pin. Both devices share identical core ADC architecture and serial interface protocols but differ in power management behavior.

ADCs/DACs - Special Purpose Replacement Considerations

Public confirmed substitute part numbers: None identified in verified documentation.